diff --git a/backend/requirements-dev.txt b/backend/requirements-dev.txt
index fe356c5..6d786cd 100644
--- a/backend/requirements-dev.txt
+++ b/backend/requirements-dev.txt
@@ -1,5 +1,5 @@
 ruff==0.8.4
-mypy==1.14.0
+mypy==2.1.0
 pytest==9.1.0
 pytest-cov==6.0.0
 httpx==0.28.1  # also a runtime dep (see requirements.txt); kept here so dev installs include it